//
// experimental/channel.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_EXPERIMENTAL_CHANNEL_HPP
#define ASIO_EXPERIMENTAL_CHANNEL_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"
#include "asio/any_io_executor.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/execution/executor.hpp"
#include "asio/is_executor.hpp"
#include "asio/experimental/basic_channel.hpp"
#include "asio/experimental/channel_traits.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
    namespace experimental {
        namespace detail {

            template<typename ExecutorOrSignature, typename = void>
            struct channel_type {
                template<typename... Signatures>
                struct inner {
                    typedef basic_channel<any_io_executor, channel_traits<>,
                            ExecutorOrSignature, Signatures...> type;
                };
            };

            template<typename ExecutorOrSignature>
            struct channel_type<ExecutorOrSignature,
                    typename enable_if<
                            is_executor<ExecutorOrSignature>::value
                            || execution::is_executor<ExecutorOrSignature>::value
                    >::type> {
                template<typename... Signatures>
                struct inner {
                    typedef basic_channel<ExecutorOrSignature,
                            channel_traits<>, Signatures...> type;
                };
            };

        } // namespace detail

/// Template type alias for common use of channel.
        template<typename ExecutorOrSignature, typename... Signatures>
        using channel = typename detail::channel_type<
                ExecutorOrSignature>::template inner<Signatures...>::type;

    } // namespace experimental
} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_EXPERIMENTAL_CHANNEL_HPP
